The i-Run team says
Technologies
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SpEVA
Classic EVA injected with a rubber-based molecule. The SpEVA midsole is more comfortable, more durable, and more dynamic. Its innovative molecular structure allows it to regain its original shape more quickly between strides. It increases longevity and thus comfort.
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GEL talon
The Asics Gel system is probably the most famous of Asics' innovations. To provide the highest possible shock absorption, Gel units are strategically positioned in the midsole. Various components are used for the Asics Gel cushioning system. Depending on its purpose, the Gel unit is encapsulated in polyurethane. The shape of the units is also precisely related to their position and function.
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Open Mesh Upper
A mesh upper that offers excellent breathability, keeping your feet cool and comfortable.